abstract |
The present invention relates to a method for producing an acid addition salt of a polyacid basic compound or an aqueous addition product thereof, wherein a polyacid base compound having a stronger basic portion than pyridine is reacted with an acid salt of pyridine. According to the present invention, the acid addition salt of the polyacid base compound can be conveniently changed to the number of additions of acids to a number suitable for the polyacid base compound. |